On bubble collisions in strongly supercooled phase transitions
Marek Lewicki, Ville Vaskonen
TL;DR
This paper investigates the dynamics of bubble collisions during strongly supercooled cosmological phase transitions through numerical simulations, exploring their gravitational wave signatures and potential black hole formation.
Contribution
It provides the first detailed numerical analysis of two-bubble collisions in supercooled phase transitions, highlighting different collision outcomes based on scalar potential.
Findings
Collision outcomes depend on scalar potential shape
Gravitational wave signals vary with collision type
Black hole formation is a possible consequence
Abstract
We study strongly supercooled cosmological phase transitions. We perform numerical lattice simulations of two-bubble collisions and demonstrate that, depending on the scalar potential, in the collision the field can either bounce to a false vacuum or remain oscillating around the true vacuum. We study if these cases can be distinguished from their gravitational wave signals and discuss the possibility of black hole formation in the bubble collisions.
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